S
M
T
W
T
F
S
26
86°
61°
27
88°
60°
28
88°
56°
29
87°
57°
30
90°
59°
31
90°
60°
1
90°
56°
2
84°
56°
3
82°
60°
4
87°
63°
5
89°
61°
6
88°
62°
7
89°
63°
8
85°
57°
9
88°
61°
10
83°
58°
11
84°
59°
12
83°
60°
13
88°
61°
14
84°
55°
15
79°
55°
16
83°
56°
17
82°
54°
18
81°
57°
19
86°
59°
20
87°
60°
21
86°
56°
22
77°
51°
23
82°
59°
24
85°
59°
25
84°
58°
26
78°
53°
27
77°
53°
28
82°
57°
29
85°
59°
30
85°
59°
31
82°
58°
1
82°
58°
2
83°
57°
3
81°
56°
4
80°
55°
5
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Chelan
Chelan's August 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 51° and 63°. The average high for August is 84° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Chelan. See also: September | October | November.
